Blasting-powder.



L JOSEPH ROSS AND WILLIAM OAIRNEY, OF GLASGOlV, SCOTLAND.

BLASTlNG-POWDER.

SEEOIFIGATIGN forming part of Letters Eatent No. 655,832, dated August 14, 1900. Application filed June 4, 1900. Serial No. 19,068. (No specimens.)

In carrying out our invention we take chlorate of potash of the proportion of about seventy-five per cent, which we pass through asieve or such like in order to granulate it. This we-willrnix with about six per cent.- ef charcoal and six per cent. of black oxide of manganese. We then take about nine per cent. of paraflin or other suitable wax,'which we preferably out up into slices and mix it up with the mixture of chlorate of potash, charcoal, and black oxide of manganese until the wax becomes perfectly black. This.

' may be done on a board or dry floor or in any other convenient place. This mixture is then put into a suitable vessel-such, for instance,

. as a jacketed cha-mber-which is heated by steam or otherwise, and is allowed to remain there until all the wax is melted and the whole mixture isformed into a moist state somewhat like wet sand. The object of this is to allow the wax to cover the particles of chlorate of potash; but we have found from experience that the wax does not eifectually accomplishthis, that there are certain parts not covered, and little crevices in the compound not filled up, thereby not altogether making the explosive safe. We therefore take vaseline in the proportion of about four per cent. and bring it to a'liquid state. This we pour over the whole mixture and stir well together,

' which completely fills up these crevices and forms aperfect coating over. the substance- .where the wax has failed to do so.

When the cartridges are to be used for mixture or substance is allowed to cool and rubbed into powder.

Of course it is tobe understood that al-' though We have mentioned certain proportions of the different substances these might be slightly varied without deviating from our invention.

Having thusdescribed our invention, the following is what we claim as new therein and desire to secure by Letters Patent:

1. The method of producing anexplosive which consists in taking a-proportion of chlorate of potash, passing the same through a sieve in order to granulate it, mixing the granulated chlorate efpetash Witha proportion of charcoal and black oxide of manganose, taking a proportion of wax and mixing it with the mixture of chlorate of potash, charcoal and black oxide of manganese until the vwax becomes perfectly black, placing the Whole in a vessel, heating the vessel with its contents until the contents become moist with the melted wax, taking a proportion of vaseline, and bringing it to a liquid state, pouring the liquid Vaseline over the mixture,- and thoroughly stirring the whole mixture together for filling the crevices in the substance to which the paraffin is inaccessible, and providing a coating on the substance which the paraflin has failed to coat. 2. An explosive consisting of a mixture in about the following proportions of ingredients: chlorate of potash, seventy-five per cent. black oxide of manganese,six'per cent.

charcoal, six per cent; wax, nine per cent;

Vaseline, four per con The foregoing specification signed at Glas-.

gow this 26th day'of May, 1900.

' JOSEPH BOSS.

WM. D. OAIRN-EY.-

In presence of-' JonnLIDnLn,

EDITH MAR Y ED' -oNns'ronn, 

